If 30% of Aman's income is added to 40% of Raman's income, the answer is 80% of Raman's income. What percentage of Aman's income is Raman's income?

In a school, number of girls is 75% of number of boys. Difference between boys and girls is 30. On a particular day 20% girls were absent, then find the number of girls those who present? 

The sum of the numbers of boys and girls in a school is 150. If the number of boys is x, the number of girls becomes x% of the total number of students. The number of boys is: 

What percentage of 5.6 kg is 140 grams?

If 40% of (A+B) = 60% of (A-B) then $${2A-3B}\over {A+B}$$ is

The difference between the value of the number increased by 20 % and the value of the number decreased by 25 % is 36. Find the number. 

In a school 80% of the students are girls. The number of boys are 500. Then the total number of students in the school is

A businessman bought an article and sold it at a loss of 5%. If he had bought it for 10% less and sold it for Rs. 33 more, he would have had a profit of 30%. The cost price of the article is